---
title: "Blockchange Ventures Leads W3.io Seed, Backs TestMachine $6.5M"
description: "Blockchange Ventures led W3.io’s seed round for a Web3 smart layer and backed TestMachine’s $6.5M raise for AI blockchain security."
date: 2025-12-11T00:00:00.000Z
tags: ["blockchange-ventures", "seed-investing", "crypto", "artificial-intelligence", "startup-funding"]
source: https://venturecapitaltracker.com/2026-blockchange-ventures-w3io-testmachine-seed
---

# Blockchange Ventures Leads W3.io Seed, Backs TestMachine $6.5M

> Blockchange Ventures led W3.io’s seed round for a Web3 smart layer and backed TestMachine’s $6.5M raise for AI blockchain security.

**Blockchange Ventures** stayed active across crypto infrastructure in late 2025, **leading W3.io's seed round** (Web3 smart layer) and backing **TestMachine's $6.5M raise** for AI blockchain security.

## Key facts

- **Investor:** Blockchange Ventures (led W3.io; participated in TestMachine)
- **W3.io:** Seed round led by Blockchange (Jul 2025); Framework Ventures, Arrington Capital
- **TestMachine:** $6.5M (Dec 2025) for AI blockchain security; Delphi Ventures, Decasonic
- **Firm:** Crypto-only, founded 2017 by Ken Seiff

## Why this matters

The two deals show Blockchange Ventures backing both protocol infrastructure and blockchain security as it deploys from its newest fund vehicle, opened December 2025.

## Sources

1. Blockchange Ventures recent investments (Tracxn): https://tracxn.com/d/venture-capital/blockchange/__ZgmPm29iUUqcON478Yh6estdyClUIgUnL5cqn2YLrG4
2. Blockchange Ventures investment activity (CB Insights): https://www.cbinsights.com/investor/blockchange-ventures